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8076112: Add @HotSpotIntrinsicCandidate annotation to indicate methods for which Java Runtime has intrinsics

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Annotate possibly intrinsified methods with @HotSpotIntrinsicCandidate. Add checks omitted by intrinsics to the library code. Add CheckIntrinsics flags to check consistency of intrinsics.

Reviewed-by: jrose, kvn, thartmann, vlivanov, abuckley, darcy, ascarpino, briangoetz, alanb, aph, dnsimon
This commit is contained in:
Zoltan Majo 2015-07-03 07:25:03 +02:00
parent 34616cd876
commit 9245cdc214
13 changed files with 191 additions and 44 deletions
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84
hotspot/src/share/vm/classfile/vmSymbols.hpp
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@ -258,6 +258,8 @@
/* Type Annotations (JDK 8 and above) */ \
template(type_annotations_name, "typeAnnotations") \
\
/* Intrinsic Annotation (JDK 9 and above) */ \
template(jdk_internal_HotSpotIntrinsicCandidate_signature, "Ljdk/internal/HotSpotIntrinsicCandidate;") \
\
/* Support for JSR 292 & invokedynamic (JDK 1.7 and above) */ \
template(java_lang_invoke_CallSite, "java/lang/invoke/CallSite") \
@ -345,7 +347,6 @@
template(dispatch_name, "dispatch") \
template(getSystemClassLoader_name, "getSystemClassLoader") \
template(fillInStackTrace_name, "fillInStackTrace") \
template(fillInStackTrace0_name, "fillInStackTrace0") \
template(getCause_name, "getCause") \
template(initCause_name, "initCause") \
template(setProperty_name, "setProperty") \
@ -635,7 +636,43 @@
// The F_xx is one of the Flags enum; see below.
//
// for Emacs: (let ((c-backslash-column 120) (c-backslash-max-column 120)) (c-backslash-region (point) (point-max) nil t))
//
//
// There are two types of intrinsic methods: (1) Library intrinsics and (2) bytecode intrinsics.
//
// (1) A library intrinsic method may be replaced with hand-crafted assembly code,
// with hand-crafted compiler IR, or with a combination of the two. The semantics
// of the replacement code may differ from the semantics of the replaced code.
//
// (2) Bytecode intrinsic methods are not replaced by special code, but they are
// treated in some other special way by the compiler. For example, the compiler
// may delay inlining for some String-related intrinsic methods (e.g., some methods
// defined in the StringBuilder and StringBuffer classes, see
// Compile::should_delay_string_inlining() for more details).
//
// Due to the difference between the semantics of an intrinsic method as defined
// in the (Java) source code and the semantics of the method as defined
// by the code in the VM, intrinsic methods must be explicitly marked.
//
// Intrinsic methods are marked by the jdk.internal.HotSpotIntrinsicCandidate
// annotation. If CheckIntrinsics is enabled, the VM performs the following
// checks when a class C is loaded: (1) all intrinsics defined by the VM for
// class C are present in the loaded class file and are marked;
// (2) an intrinsic is defined by the VM for all marked methods of class C.
//
// If a mismatch is detected for a method, the VM behaves differently depending
// on the type of build. A fastdebug build exits and reports an error on a mismatch.
// A product build will not replace an unmarked library intrinsic method with
// hand-crafted code, that is, unmarked library intrinsics are treated as ordinary
// methods in a product build. The special treatment of a bytecode intrinsic method
// persists even if the method not marked.
//
// When adding an intrinsic for a method, please make sure to appropriately
// annotate the method in the source code. The list below contains all
// library intrinsics followed by bytecode intrinsics. Please also make sure to
// add the declaration of the intrinsic to the approriate section of the list.
#define VM_INTRINSICS_DO(do_intrinsic, do_class, do_name, do_signature, do_alias) \
/* (1) Library intrinsics */ \
do_intrinsic(_hashCode, java_lang_Object, hashCode_name, void_int_signature, F_R) \
do_name( hashCode_name, "hashCode") \
do_intrinsic(_getClass, java_lang_Object, getClass_name, void_class_signature, F_R) \
@ -792,12 +829,12 @@
\
do_class(sun_nio_cs_iso8859_1_Encoder, "sun/nio/cs/ISO_8859_1$Encoder") \
do_intrinsic(_encodeISOArray, sun_nio_cs_iso8859_1_Encoder, encodeISOArray_name, encodeISOArray_signature, F_S) \
do_name( encodeISOArray_name, "encodeISOArray") \
do_name( encodeISOArray_name, "implEncodeISOArray") \
do_signature(encodeISOArray_signature, "([CI[BII)I") \
\
do_class(java_math_BigInteger, "java/math/BigInteger") \
do_intrinsic(_multiplyToLen, java_math_BigInteger, multiplyToLen_name, multiplyToLen_signature, F_S) \
do_name( multiplyToLen_name, "multiplyToLen") \
do_name( multiplyToLen_name, "implMultiplyToLen") \
do_signature(multiplyToLen_signature, "([II[II[I)[I") \
\
do_intrinsic(_squareToLen, java_math_BigInteger, squareToLen_name, squareToLen_signature, F_S) \
@ -823,21 +860,21 @@
do_class(com_sun_crypto_provider_aescrypt, "com/sun/crypto/provider/AESCrypt") \
do_intrinsic(_aescrypt_encryptBlock, com_sun_crypto_provider_aescrypt, encryptBlock_name, byteArray_int_byteArray_int_signature, F_R) \
do_intrinsic(_aescrypt_decryptBlock, com_sun_crypto_provider_aescrypt, decryptBlock_name, byteArray_int_byteArray_int_signature, F_R) \
do_name( encryptBlock_name, "encryptBlock") \
do_name( decryptBlock_name, "decryptBlock") \
do_name( encryptBlock_name, "implEncryptBlock") \
do_name( decryptBlock_name, "implDecryptBlock") \
do_signature(byteArray_int_byteArray_int_signature, "([BI[BI)V") \
\
do_class(com_sun_crypto_provider_cipherBlockChaining, "com/sun/crypto/provider/CipherBlockChaining") \
do_intrinsic(_cipherBlockChaining_encryptAESCrypt, com_sun_crypto_provider_cipherBlockChaining, encrypt_name, byteArray_int_int_byteArray_int_signature, F_R) \
do_intrinsic(_cipherBlockChaining_decryptAESCrypt, com_sun_crypto_provider_cipherBlockChaining, decrypt_name, byteArray_int_int_byteArray_int_signature, F_R) \
do_name( encrypt_name, "encrypt") \
do_name( decrypt_name, "decrypt") \
do_name( encrypt_name, "implEncrypt") \
do_name( decrypt_name, "implDecrypt") \
do_signature(byteArray_int_int_byteArray_int_signature, "([BII[BI)I") \
\
/* support for sun.security.provider.SHA */ \
do_class(sun_security_provider_sha, "sun/security/provider/SHA") \
do_intrinsic(_sha_implCompress, sun_security_provider_sha, implCompress_name, implCompress_signature, F_R) \
do_name( implCompress_name, "implCompress") \
do_name( implCompress_name, "implCompress0") \
do_signature(implCompress_signature, "([BI)V") \
\
/* support for sun.security.provider.SHA2 */ \
@ -851,7 +888,7 @@
/* support for sun.security.provider.DigestBase */ \
do_class(sun_security_provider_digestbase, "sun/security/provider/DigestBase") \
do_intrinsic(_digestBase_implCompressMB, sun_security_provider_digestbase, implCompressMB_name, implCompressMB_signature, F_R) \
do_name( implCompressMB_name, "implCompressMultiBlock") \
do_name( implCompressMB_name, "implCompressMultiBlock0") \
do_signature(implCompressMB_signature, "([BII)I") \
\
/* support for com.sun.crypto.provider.GHASH */ \
@ -865,17 +902,18 @@
do_intrinsic(_updateCRC32, java_util_zip_CRC32, update_name, int2_int_signature, F_SN) \
do_name( update_name, "update") \
do_intrinsic(_updateBytesCRC32, java_util_zip_CRC32, updateBytes_name, updateBytes_signature, F_SN) \
do_name( updateBytes_name, "updateBytes") \
do_name( updateBytes_name, "updateBytes0") \
do_signature(updateBytes_signature, "(I[BII)I") \
do_intrinsic(_updateByteBufferCRC32, java_util_zip_CRC32, updateByteBuffer_name, updateByteBuffer_signature, F_SN) \
do_name( updateByteBuffer_name, "updateByteBuffer") \
do_name( updateByteBuffer_name, "updateByteBuffer0") \
do_signature(updateByteBuffer_signature, "(IJII)I") \
\
/* support for java.util.zip.CRC32C */ \
do_class(java_util_zip_CRC32C, "java/util/zip/CRC32C") \
do_intrinsic(_updateBytesCRC32C, java_util_zip_CRC32C, updateBytes_name, updateBytes_signature, F_S) \
do_intrinsic(_updateDirectByteBufferCRC32C, java_util_zip_CRC32C, updateDirectByteBuffer_name, updateByteBuffer_signature, F_S) \
do_name( updateDirectByteBuffer_name, "updateDirectByteBuffer") \
do_intrinsic(_updateBytesCRC32C, java_util_zip_CRC32C, updateBytes_C_name, updateBytes_signature, F_S) \
do_name( updateBytes_C_name, "updateBytes") \
do_intrinsic(_updateDirectByteBufferCRC32C, java_util_zip_CRC32C, updateDirectByteBuffer_C_name, updateByteBuffer_signature, F_S) \
do_name( updateDirectByteBuffer_C_name, "updateDirectByteBuffer") \
\
/* support for sun.misc.Unsafe */ \
do_class(sun_misc_Unsafe, "sun/misc/Unsafe") \
@ -886,12 +924,6 @@
do_intrinsic(_copyMemory, sun_misc_Unsafe, copyMemory_name, copyMemory_signature, F_RN) \
do_name( copyMemory_name, "copyMemory") \
do_signature(copyMemory_signature, "(Ljava/lang/Object;JLjava/lang/Object;JJ)V") \
do_intrinsic(_park, sun_misc_Unsafe, park_name, park_signature, F_RN) \
do_name( park_name, "park") \
do_signature(park_signature, "(ZJ)V") \
do_intrinsic(_unpark, sun_misc_Unsafe, unpark_name, unpark_signature, F_RN) \
do_name( unpark_name, "unpark") \
do_alias( unpark_signature, /*(LObject;)V*/ object_void_signature) \
do_intrinsic(_loadFence, sun_misc_Unsafe, loadFence_name, loadFence_signature, F_RN) \
do_name( loadFence_name, "loadFence") \
do_alias( loadFence_signature, void_method_signature) \
@ -1074,11 +1106,15 @@
do_intrinsic(_getAndSetObject, sun_misc_Unsafe, getAndSetObject_name, getAndSetObject_signature, F_R)\
do_name( getAndSetObject_name, "getAndSetObject") \
do_signature(getAndSetObject_signature, "(Ljava/lang/Object;JLjava/lang/Object;)Ljava/lang/Object;" ) \
/*== LAST_COMPILER_INLINE*/ \
/*the compiler does have special inlining code for these; bytecode inline is just fine */ \
\
do_intrinsic(_fillInStackTrace, java_lang_Throwable, fillInStackTrace_name, void_throwable_signature, F_RNY) \
\
/* (2) Bytecode intrinsics */ \
\
do_intrinsic(_park, sun_misc_Unsafe, park_name, park_signature, F_RN) \
do_name( park_name, "park") \
do_signature(park_signature, "(ZJ)V") \
do_intrinsic(_unpark, sun_misc_Unsafe, unpark_name, unpark_signature, F_RN) \
do_name( unpark_name, "unpark") \
do_alias( unpark_signature, /*(LObject;)V*/ object_void_signature) \
do_intrinsic(_StringBuilder_void, java_lang_StringBuilder, object_initializer_name, void_method_signature, F_R) \
do_intrinsic(_StringBuilder_int, java_lang_StringBuilder, object_initializer_name, int_void_signature, F_R) \
do_intrinsic(_StringBuilder_String, java_lang_StringBuilder, object_initializer_name, string_void_signature, F_R) \